AutoFill Help Link added on Mac

chrome/browser/autofill/autofill_dialog_controller_mac.h

Index: chrome/browser/autofill/autofill_dialog_controller_mac.h
diff --git a/chrome/browser/autofill/autofill_dialog_controller_mac.h b/chrome/browser/autofill/autofill_dialog_controller_mac.h
index d7b50c3d9cf527be7bf3ff0c465a7acb97a10e8d..34e40fa400c0a764c03b78ca30563873061f8368 100644
--- a/chrome/browser/autofill/autofill_dialog_controller_mac.h
+++ b/chrome/browser/autofill/autofill_dialog_controller_mac.h
@@ -119,11 +119,15 @@ class Profile;
 // credit card list.
 - (IBAction)deleteSelection:(id)sender;
 
-// IBActions for editing an item.  |sender| is expected to be the "Edit..."
+// IBAction for editing an item.  |sender| is expected to be the "Edit..."
 // button.  The editing acts on the selected item in either the address or
 // credit card list.
 - (IBAction)editSelection:(id)sender;
 
+// IBAction for opening the help link.  |sender| is expected to be the
+// "About AutoFill" link.
+- (IBAction)openHelp:(id)sender;
+
 // NSTableView data source methods.
 - (id)tableView:(NSTableView *)tableView
     objectValueForTableColumn:(NSTableColumn *)tableColumn